Ch 14 Part 1- Blood Vessels and Pressure- Part 1 Physical Laws Governing Blood Flow and Blood Pressure
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Blood flow through blood vessels follows the physical laws describing the flow of any ______ through any system of pipes.

liquid

The flow rate of a liquid through the pipes is directly proportional to the difference between the pressures of the two ends of the pipe and inversely proportional to the ______ of the pipe.

resistance

Blood flow is higher when the pressure difference between the two ends of the tube is higher and when the resistance to blood flow is ______.

lower

The body has a mechanism to redirect blood from tissues that do not require much blood to tissues that need a lot of ______.

<p>it</p> Signup and view all the answers

Without a constant supply of oxygen, you will ______.

<p>faint</p> Signup and view all the answers

In a person who is standing up, the heart has to pump blood against ______ to get it to the brain.

<p>gravity</p> Signup and view all the answers

Flow = (P1 – P2)/______ = size of the pressure gradient divided by the resistance.

<p>Resistance</p> Signup and view all the answers

The body can increase blood flow by ______ the pressure gradient.

<p>Increasing</p> Signup and view all the answers

The body can decrease blood flow by ______ the resistance.

<p>Increasing</p> Signup and view all the answers

______ flow is a term that refers to the movement of any substance down its pressure gradient.

<p>Bulk</p> Signup and view all the answers

Mean arterial pressure is greatest in the ______.

<p>arteries</p> Signup and view all the answers

Mean arterial pressure is lowest in the ______ as it returns to the heart.

<p>veins</p> Signup and view all the answers

Blood flow increases when mean arterial pressure ______

<p>increases</p> Signup and view all the answers

The pressure gradient is higher in the ______ circuit than in the pulmonary circuit

<p>systemic</p> Signup and view all the answers

The most significant drop in blood pressure occurs at the level of the ______

<p>arterioles</p> Signup and view all the answers

Capillaries consist of a single layer of simple squamous epithelium and a small amount of ______

<p>basement membrane</p> Signup and view all the answers

If the pressure of blood flowing through the capillaries was too high, the capillary walls would ______

<p>burst</p> Signup and view all the answers

Flow = (P1 – P2)/Resistance = The ______/Resistance

<p>pressure gradient</p> Signup and view all the answers

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